Microsoft Corp Chief Executive Officer Satya Nadella is set to visit China in late September, a source familiar with the matter said on Thursday, as the Chinese government conducts an antitrust investigation into the world’s largest software company. It is not clear if Nadella, who took over as Microsoft CEO in February, will meet with any Chinese government representatives as part of his visit, or try to resolve issues with the State Administration for Industry and Commerce (SAIC), one of China’s antitrust regulators.